diff --git a/.github/workflows/pep8.yml b/.github/workflows/pep8.yml
index a48c4f1..aed35cf 100644
--- a/.github/workflows/pep8.yml
+++ b/.github/workflows/pep8.yml
@@ -17,6 +17,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install pipenv
+        pipenv lock
         pipenv sync
     - name: Lint 
       run: |